3) In which system do molecule-ion attractions
exist?
A) KCI(S)
C) KCIO)
B) KCl(aq)
D) KCI(g)

When a 23892u nucleus emits an α particle with a kinetic energy of 4.20 MeV, the resulting daughter nucleus is 23490Th.

This occurs due to the decay process known as alpha decay, in which a heavy nucleus emits an alpha particle consisting of two protons and two neutrons.

The alpha particle carries away some kinetic energy from the parent nucleus, resulting in a lower mass and atomic number for the daughter nucleus.

This type of decay is common in heavier elements and helps to stabilize the nucleus by reducing its overall energy. Understanding alpha decay and its resulting daughter nuclei is important in fields such as nuclear physics and radiochemistry.

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Answer:

8.7892x10^23

Explanation:

number of molecules equal number of moles times 6.02x10^23

Answer:

the glass and water maybe

Using Bronsted - Lowry theory of acid and bases reaction :

a) HNO₃   +  OH⁻    -----> NO₃   +  H₂O

b) CH₃NH₂  +   H₂O ------>   CH₃NH₃⁺    +    OH⁻

c) OH⁻  +  HPO₄²⁻  ⇔    PO₄³⁻    +   H₂O

2) NaOH is an Arrhenius base as it dissociates in water to give OH⁻ (hydroxide) and Na⁺ (sodium) ions.

NaOH is Bronsted Lowry base as it accepts H⁺ ion in the given reaction :

HCl + NaOH --->    H₂O   +  NaCl

3)   potassium metal with hydrochloric acid:

2K  +    2HCl   ---->   2KCl    +   H₂

4)

a) KOH  =  potassium hydroxide is strong base

b) H₂Se =  hydrogen selenide is acid

c) C₂H₃O₂H = acetic acid

d) Fe(OH)₂ = iron(II)hydroxide is base

e) HCN = hydrogen cyanide is weak base.

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Answer:oml felt

Explanation:

I'm sorry tho

Answer:

800-273-8255

Explanation:

here is the sui cide hotline number

The water molecules are split into hydrogen and oxygen gases by the electric current. Then, the gases of hydrogen and oxygen are released into the environment. Electrolysis is the name of this procedure.

The water molecules are disassembled by electrolysis using electricity into their component elements of hydrogen and oxygen, which are subsequently liberated as gases.

A procedure called electrolysis employs electric current to separate a substance into its constituent parts. In electrolysis, an electric current is used to drive ions in a solution towards electrodes, where they combine to generate a new molecule. The method is generally used to refine metals and other chemicals as well as to extract metals from their ores.

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Archaea (Archaeon ): Single-celled microorganisms without nuclei and with membranes different from all other organisms. Once thought to be bacteria.

Unicellular organism

-A unicellular organism, also known as a single-celled organism, is an organism that consists of a single cell, unlike a multicellular organism that consists of multiple cells. Unicellular organisms fall into two general categories: prokaryotic organisms and eukaryotic organisms.

The oscillation of the oxygen atom occurs with frequency fo = 3.7 × 10¹³ Hz when oxygen atom replace to sulfur the frequency of sulfur is 2.7 × 10¹³ Hz.

The frequency expression is given as :

F = ( 1/ 2π ) × √(k/m)

or F² m =  k / 4π²

now. if oxygen atom is replaced by the sulfur atom:

(F² m) oxygen = ( F² m) sulfur

F sulfur = F oxygen × √ (m oxygen / m sulfur)

F sulfur = 3.7 × 10¹³  × √ 16 / 32

F sulfur = 2.7 × 10¹³ Hz.

Thus, An oxygen atom at a particular site within a DNA molecule can be made to execute simple harmonic motion when illuminated by infrared light. the oxygen atom is bound with a spring-like chemical bond to a phosphorus atom, which is rigidly attached to the DNA backbone. the oscillation of the oxygen atom occurs with frequency fo = 3.7 × 10¹³ Hz when oxygen atom replace to  sulfur atom the frequency of sulfur is 2.7 × 10¹³ Hz.

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Answer:

When light reaches a mirror, it reflects off the surface of the mirror: the incident ray is the light going towards the mirror the reflected ray is the light coming away from the mirror

Explanation:

have a nice day.

Cr-53 (mass of 52.941 amu and 9.50% abundance); and Cr-54 (mass of 53.939 amu and 2.36% adundance). The average atomic mass of chromium is 51.996 amu.

Atomic mass refers to the mass of an atom, which is the fundamental unit of matter. It is usually expressed in atomic mass units (amu) or unified atomic mass units (u), and it is a measure of the total number of protons, neutrons, and electrons in an atom.

The atomic mass of an element is the average mass of all the isotopes of that element. Isotopes are atoms of the same element that have different numbers of neutrons, and therefore different atomic masses. The atomic mass of an element is determined by the relative abundance of each isotope and its atomic mass. The atomic mass of an element is important in a variety of applications, including chemistry, physics, and materials science. It is used to determine the molar mass of a substance, which is essential in stoichiometry calculations.

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Answer: charge distribution within the H₂O molecule gives the polarity in molecule.

Explanation:

The polarity of the water molecule is the result of its molecular structure and the charge distribution within the molecule. Water (H2O) consists of two hydrogen atoms bonded to an oxygen atom. The oxygen atom is more electronegative than the hydrogen atoms and due to electronegativity difference between H and O, water get its polarity.

Answer:

candles

Explanation:

if u burn these fruits, it is obvious that there will be ashes but the key hint here is

" retaining the smell"

and what are things that smell and can be fruit scented?

a..... CANDLE

hope this helped :D

Answer:

BY BURNING A CANDLE WITH ITS SCENT

Explanation:

The pH of the sodium hydroxide (NaOH) solution is 11.7.

Sodium hydroxide is a strong base and has a very high pH.

To calculate the pH of the solution, you must first calculate the molarity of the solution. To do this, divide the mass of sodium hydroxide by its molar mass, then divide that number by the volume of the solution.

Molarity = (0.40 g NaOH) / (40 g/mol) / (2.0 L) = 0.005 M = 5 x 10⁻³M.

The pH of a strong base is equal to its pOH plus 14. Since pOH is equal to -log[OH-], we can use the molarity of the solution to calculate the pH.

pOH = -log(5 x 10⁻³ M) = 2.30= 11.7

Therefore, the pH of the solution is equal to 14 - 2.30 = 11.7.

Therefore, 0.40 g of sodium hydroxide (NaOH) pellets dissolved in water will create a solution with a pH of 11.7.

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The average concentration of wastewater is 168 kg/m³.

The consumption of solvent per day = 100 kg/30 days

The consumption of solvent per day = 10/3 kg/day

Amount lost = 10/3×15/100

Amount lost = 0.5

Remaining amount of solvent = 3.3 - 0.5

Remaining amount of solvent = 2.8 kg/day

Recovered amount = 2.8×40/100

Recovered amount = 1.12 kg/day

Remaining amount of solvent = 2.8 - 1.12

Remaining amount of solvent = 1.68 kg/day

So, 1.68kg/day is received by wastewater. As 1 kg is 1000 gram. Thus, 1.68 kg is 1680 grams Concentration in wastewater = 1680/10

Concentration in wastewater = 168 kg/m³

Hence, the concentration in wastewater is 168 kg/m³.

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The equator of the sun rotates faster than the poles.

The equator of the sun rotates faster than its poles. This is known as differential rotation, and it is due to the fact that the sun is not a solid body, but is composed of gas and plasma. The equatorial regions of the sun rotate faster because they are farther from the center of the sun, where the gravitational pull is stronger, and thus experience less resistance to their motion.

The period of rotation of the equator of the sun is shorter than that of the poles. The equator rotates once every 25.4 days, while the poles rotate once every 36 days.

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The products of hydrobromic acid, HBr, reacting with magnesium hydroxide, Mg(OH)2, are magnesium bromide, MgBr2, and water, H2O. Therefore, the correct answer is MgBr2 and H2O.

Predict the products of hydrobromic acid (HBr) reacting with magnesium hydroxide (Mg(OH)2).
When HBr reacts with Mg(OH)2, an acid-base reaction occurs, producing a salt and water as the products. The resulting salt is formed by combining the magnesium cation (Mg²⁺) with the bromide anion (Br⁻). The water is formed by combining the hydrogen cation (H⁺) with the hydroxide anion (OH⁻).
Step-by-step explanation:
1. HBr + Mg(OH)2 → Mg²⁺ + 2Br⁻ + 2H⁺ + 2OH⁻
2. Combine Mg²⁺ and 2Br⁻ to form MgBr2.
3. Combine 2H⁺ and 2OH⁻ to form 2H2O.
The final products are MgBr2 and H2O. So, your answer is: MgBr2 and H2O.

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Image Retention is prevented by flooding the imaging plate with bright light after reading.

The term that fills in the blank in the given statement "_______ is prevented by flooding the imaging plate with bright light after reading" is "Image retention.

Image retention is a temporary or sometimes permanent phenomenon that occurs when a picture is left on a screen or other image-generating device for an extended period.

After viewing a fixed picture for a certain amount of time, a faint remnant of the picture may remain visible when the picture is removed, similar to how one can see an after-image after looking at a bright light.

This is often referred to as "ghosting.

Therefore, Image Retention is prevented by flooding the imaging plate with bright light after reading.

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Answer:

56.64°c

Explanation:

its obtained from facts that heat gained by water=heat lost by calorimeter

Based on the information provided, it seems like Summit made a loss on their investment in Microsoft common shares. The difference between the purchase price of $485,000 and the fair value of $483,000 on December 31 indicates a loss of $2,000.

However, it's important to note that investments in stocks can be volatile and their values can fluctuate rapidly over time. It's also possible that the shares could increase in value in the future, which would offset any initial losses. Additionally, factors such as market trends, company performance, and economic conditions can all affect the value of stocks.

Therefore, it's essential to conduct thorough research and analysis before investing in any securities. It's also advisable to seek the advice of a financial advisor to help you make informed investment decisions and manage your portfolio effectively.

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Ionization energy refers to the amount of energy needed to remove an electron from an atom. Ionization energy decreases as we go down a group. Ionization energy increases from left to right across the periodic table.

Ionization is the process by which ions are formed by the gain or loss of an electron from an atom or molecule.

Ionization energy is defined as the energy required to remove the most loosely bound electron from a neutral gaseous atom.

When we move across a period from left to right then there occurs a decrease in atomic size of the atoms. Therefore, ionization energy increases along a period but decreases along a group.

Smaller is the size of an atom more will be the force of attraction between its protons and electrons. Hence, more amount of energy is required to remove an electron.

Thus, we can conclude that the energy required to remove an electron from a gaseous atom is called ionization energy.

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Ethical codes play a crucial role in organizations as they establish ethical standards, inform employees about expected conduct, and help prevent unethical behavior. Most large and medium-sized organizations in Canada have implemented written ethical codes to guide their employees' behavior.

Ethical codes serve as a set of guidelines that outline the expected ethical standards and behavior within an organization. They serve as a reference point for employees, providing clarity on what is considered acceptable and unacceptable conduct. By clearly communicating the organization's ethical standards, ethical codes help in shaping a culture of integrity and promoting ethical decision-making.

Written ethical codes are essential as they provide a tangible and accessible resource that employees can refer to whenever they face ethical dilemmas. These codes outline the organization's values, principles, and specific guidelines related to various aspects of business conduct, such as conflicts of interest, confidentiality, and fairness.

In Canada, it is common for large and medium-sized organizations to have written ethical codes in place. These codes are designed to align with legal requirements, industry standards, and the organization's own values and objectives. Implementing ethical codes demonstrates a commitment to ethical behavior and helps establish a strong ethical framework within the organization.

Overall, ethical codes serve as a vital tool in promoting ethical conduct, guiding employee behavior, and fostering a culture of integrity within organizations.

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Answer:

1 mole of NaCl reacts with 1 mole of AgNO₃ to produce 1 mole of AgCl and 1 mole of NaNO₃

Explanation:

The given reaction is a double decomposition (metathesis) reaction. A reaction in which the products are formed by the exchange of the ions present in the two reactants. NaCL and AgNO₃ exchange ions to form AgCl, which precipitates and NaNO₃.

The balanced equation for reaction is given below;

NaCl(aq) + AgNO₃(aq) ----> AgCl(s) + NaNO₃(aq)

In the reaction above, the mole ratio of the reactants to products is 1 : 1 ---> 1 : 1

This means that 1 mole of NaCl reacts with 1 mole of AgNO₃ to produce 1 mole of AgCl and 1 mole of NaNO₃.

Given the molar mass of the compounds above;

NaCl = 58.5 g/mol; AgNO₃ = 170 g/mol; AgCl = 143.5 g/mol; NaNO₃ = 85 g/mol

Therefore, 58.5 g of NaCl reacts with 170 g of AgNO₃ to produce 143.5 g of AgCl and 85 g of NaNO₃

Answer:

sodium

Explanation:

The mass of the compound required in the given number of moles is 70.38 g.

The given parameters;

The mass of the compound that will be required in the number of moles is the product of the molecular weight of the compound and its number of moles available.

The mass of the compound required in the given number of moles is calculated as follows;

mass = moles x molecular weight

mass = 0.51 x 138

mass = 70.38 g

Thus, the mass of the compound required in the given number of moles is 70.38 g.

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Covalent bonding is present in Quartz. Covalent bonds result in a high melting point. Covalent solids are insoluble in most solvents.

Quartz is very hard to melt because quartz is unsteady above 870 Celsius, and molten silica is wobbling below 1713 Celsius. In the interval between 870 and 1713 degrees, quartz tends to change to tridymite or cristobalite, not melt. It is hard to heat quartz to melt, in the region of 1650 Celsius

Melting point: The melting point of quartz is higher than 1700°C. Curie temperature for alpha and beta quartz: The Curie warmth for quartz is 573°C.

So we can conclude that Crystal quartz has a very particular melting point. Because quartz glass is a single component it doesn't form eutectics

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